On Wed, 14 Feb 2018 00:04:58 +0100, Maciej S. Szmigiero wrote:
The emu10k1-family chips need the first page (index 0) reserved in their page tables for some reason (every emu10k1 driver I've checked does this without much of an explanation). Using the first page for normal samples results in a broken playback.
However, we already have a dummy page allocated - so called "silent page" and, in fact, had always been setting it as the first page in the chip page table because an initialization of every entry of the page table to point to a silent page happens after and overwrites the reserved_page allocation.
So the only thing remaining to remove the reserved_page allocation is a trivial change to the page allocation logic to ignore the first page entry and start its allocations from the second entry (index 1).
Signed-off-by: Maciej S. Szmigiero mail@maciej.szmigiero.name
Changes from v1, v2: None in this patch.
Thanks, applied all 5 patches now.
Takashi